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12e856c26d
Original commit message from CVS: Riff, EBML, fourcc etc. work. Not fully finished, but better than what we used to have and definately worth a first broad testing. I've revived rifflib. Rifflib used to be a bytestream-for-riff, which just dup'ed bytestream. I've rewritten rifflib to be a modern riff- chunk parser that uses bytestream fully, plus adds some extra functions so that riff file parsing becomes extremely easy. It also contains some small usability functions for strh/strf and metadata parsing. Note that it doesn't use the new tagging yet, that's a TODO. Avidemux has been rewritten to use this. I think we all agreed that avidemux was pretty much a big mess, which is because it used all sort of bytestream magic all around the place. It was just ugly. This is a lot nicer, very complete and safe. I think this is far more robust than what the old avidemux could ever have been. Of course, it might contain bugs, please let me know. EBML writing has also been implemented. This is useful for matroska. I'm intending to modify avidemux (with a riffwriter) similarly. Maybe I'll change wavparse/-enc too to use rifflib. Lastly, several plugins have been modified to use rifflib's fourcc parsing instead of their own. this puts fourcc parsing in one central place, which should make it a lot simpler to add new fourccs. We might want to move this to its own lib instead of rifflib. Enjoy!
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/* GStreamer EBML I/O
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* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* ebml-read.c: read EBML data from file/stream
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_EBML_READ_H__
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#define __GST_EBML_READ_H__
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#include <glib.h>
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#include <gst/gst.h>
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#include <gst/bytestream/bytestream.h>
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G_BEGIN_DECLS
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#define GST_TYPE_EBML_READ \
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(gst_ebml_read_get_type ())
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#define GST_EBML_READ(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_EBML_READ, GstEbmlRead))
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#define GST_EBML_READ_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_EBML_READ, GstEbmlReadClass))
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#define GST_IS_EBML_READ(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_EBML_READ))
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#define GST_IS_EBML_READ_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_EBML_READ))
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#define GST_EBML_READ_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_EBML_READ, GstEbmlReadClass))
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typedef struct _GstEbmlLevel {
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guint64 start,
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length;
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} GstEbmlLevel;
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typedef struct _GstEbmlRead {
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GstElement parent;
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GstPad *sinkpad;
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GstByteStream *bs;
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GList *level;
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} GstEbmlRead;
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typedef struct _GstEbmlReadClass {
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GstElementClass parent;
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} GstEbmlReadClass;
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GType gst_ebml_read_get_type (void);
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guint32 gst_ebml_peek_id (GstEbmlRead *ebml,
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guint *level_up);
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GstEvent *gst_ebml_read_seek (GstEbmlRead *ebml,
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guint64 offset);
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gboolean gst_ebml_read_skip (GstEbmlRead *ebml);
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gboolean gst_ebml_read_buffer (GstEbmlRead *ebml,
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guint32 *id,
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GstBuffer **buf);
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gboolean gst_ebml_read_uint (GstEbmlRead *ebml,
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guint32 *id,
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guint64 *num);
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gboolean gst_ebml_read_sint (GstEbmlRead *ebml,
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guint32 *id,
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gint64 *num);
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gboolean gst_ebml_read_float (GstEbmlRead *ebml,
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guint32 *id,
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gdouble *num);
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gboolean gst_ebml_read_ascii (GstEbmlRead *ebml,
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guint32 *id,
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gchar **str);
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gboolean gst_ebml_read_utf8 (GstEbmlRead *ebml,
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guint32 *id,
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gchar **str);
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gboolean gst_ebml_read_date (GstEbmlRead *ebml,
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guint32 *id,
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gint64 *date);
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gboolean gst_ebml_read_master (GstEbmlRead *ebml,
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guint32 *id);
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gboolean gst_ebml_read_binary (GstEbmlRead *ebml,
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guint32 *id,
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guint8 **binary,
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guint64 *length);
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gboolean gst_ebml_read_header (GstEbmlRead *read,
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gchar **doctype,
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guint *version);
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G_END_DECLS
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#endif /* __GST_EBML_READ_H__ */
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